U.S. meat processor Tyson Foods Inc. is refocusing on its home market, selling off a big chunk of its fledgling international operations to a rival to help pay for its acquisition of Jimmy Dean sausage maker Hillshire Brands Co.

Tyson said Monday it plans to sell some Latin American chicken operations for $575 million to Brazilian meatpacker JBS SA, which it beat out in a bidding war for Hillshire. The operations, which include...